Insert Data into Excel or Access as a Database

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.OleDb;                //Add this namepace to get object for OLEDB
public partial class addtoexcel : System.Web.UI.Page
{
      protected void Page_Load(object sender, EventArgs e)
      {
      }
      public void clearall()
      {
            txtnm.Text = "";
            txtadd.Text = "";
            txtcity.Text = "";
            txtphone.Text = "";
            txtemail.Text = "";
      }
      protected void btnsubmit_Click(object sender, EventArgs e)
      {
            //Excel Connection string
            //string constr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source = C:\\Users\\Administrator\\Desktop\            \Excel data.xlsx;Extended Properties=\"Excel 12.0;ReadOnly=False;HDR=Yes;\"";

            //Access Connection string
            string constr = "Provider=Microsoft.ACE.OLEDB.12.0;; Data Source = C:\\Users\\Administrator\\Desktop\            \Acces sdata.accdb; Persist Security Info=False;";
            //Excel Querystring
            //string query = "Insert into [sheetname$] (Name, Address, City, Phone, EmailID) VALUES ('" + txtnm.T            ext +             "','" + txtadd.Text + "','" + txtcity.Text + "','" + txtphone.Text + "','" + txtemail.Text + "')";
            //Access Querystring
            string query = "Insert into youraccesstablename (Name, Address, City, Phone, EmailID) VALUES ('" + tx            tnm.Text + "','" + txtadd.Text + "','" + txtcity.Text + "','" + txtphone.Text + "','" + txtemail.Text             + "')";
            OleDbConnection con = new OleDbConnection(constr);
            if (con.State == ConnectionState.Closed)
            {
                  con.Open();
            }
            OleDbCommand cmd = new OleDbCommand(query,con);
            int result = cmd.ExecuteNonQuery();
            if (result > 0)
            {
                  Response.Write("<script>alert('Data Inserted Successfully.')</script>");
            }
            else
            {
                  Response.Write("<script>alert('Daata not Inserted successfully.')</script>");
            }
            con.Close();
            clearall();
      }
}